You have to get 6. Think of it like a betta sorority, you need the aggression to spread out.
You could find a mated male female pair but nothing else can live with them except maybe a few bottom dwellers.

You have to get 6. Think of it like a betta sorority, you need the aggression to spread out.
You could find a mated male female pair but nothing else can live with them except maybe a few bottom dwellers.